Answer :

MathG33k
There is no exact value of pi. I can give you some digits such as 3.1415926535 8979323846, this is used to calculate the area/ volume of many things and is often estimated as 3.14.
kate200468
[tex] \pi = \frac{the\ length\ of\ the\ circle}{the\ length\ of\ the\ diameter} = \frac{2\pi r}{2r} \\ \\ \pi \approx3,14159\ 26535\ 89793\ 23846\ 26433\ 83279\ 50288\ 41971\ 69399\\37510\ 58209\ 74944\ 59230\ 78164\ 06286\ 20899\ 86280\ 34825\ 34211\\70679\ 82148\ 08651\ 32823\ 06647\ 09384\ 46095\ 50582\ 23172\ 53594\\08128\ 48111\ 74502\ 84102\ 70193\ 85211\ 05559\ 64462\ 29489\ 54930\\38196 ...[/tex]

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